fits EY20 & more
O/E: 106 62500 08

Fits all EC10V & more
O/E: 160 62314 20

Suits 32653A Heavy Duty Grinder 3/8" & 404" Chain

Suits 32653A Heavy Duty Grinder 325" & Micro Chain

suits many Robin & Others
O/E: 066 00003 71

Fits many Robin
O/E: 066 200000 11

fits later EC10V
O/E: 106 70134 00

Universal

52mm Piston Diameter
O/E: -

O.D 51.25mm x 1.75mm thick
O/E: -

51.50mm Piston Diameter
O/E: -

O.D 51mm x 1.75mm thick
O/E: -